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基于一步法制备超高PEO负载的亲 CO2sub>气体分离膜用于高效碳捕集 Article

朱斌, 赫羴珊, 吴亚东, 李松伟, 邵路

《工程（英文）》 2023年第26卷第7期页码 220-228 doi: 10.1016/j.eng.2022.03.016

摘要：

针对日益增加的大气CO2sub>含量，膜技术被认为是一种有前景的碳捕集策略，其中亲CO2sub>分离膜已经展示出显著的应用潜力，特别是在CO2sub>/轻质气体分离方面。以聚环氧乙烷（PEO）为代表的CO2sub>亲和材料，因其与CO2sub>的特殊偶极-四极矩相互作用而吸引了广泛的研究关注。因此，分离性能轻松超过了著名的分离上限。此外，高结构稳定性使得分离膜在高进料压力（高达20 bar）下表现出更好的CO2sub>渗透系数和气体选择性。本研究同时改善了全聚合物膜的机械性能和气体分离性能，在工业碳捕集和气体净化领域展现出显著潜力。

关键词：膜分离气体分离 CO2sub>捕集亲CO2sub>分离膜聚环氧乙烷

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淡水室填充阳离子交换树脂的EDI膜堆对镍离子溶液分离性能的研究

牛玉标,徐小青,赵海洋,周志军

《中国工程科学》 2014年第16卷第7期页码 62-67

摘要：

采用淡水室填充阳离子交换树脂的电去离子（EDI）膜堆来处理低浓度含镍废水，考察了该EDI 膜堆用于低浓度重金属废水处理的可行性，并探讨了膜堆电压和料液流量对EDI 分离重金属离子性能的影响。结果表明，对于Ni²⁺浓度为50 mg/L，pH为4.5 的料液工况，操作电压为25 V，料液处理量为20 L/h 时，可保证淡水产水Ni²⁺浓度在2 mg/L以下，且浓缩水Ni²⁺浓度大于900 mg/L，电流效率达到24.2 %。

关键词： EDI 阳离子交换树脂重金属镍离子

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对二氧化碳具有选择性的聚环氧乙烷基薄膜的发展——从实验室到中试规模

Brinkmann Torsten,Lillepärg Jelena,Notzke Heiko,Pohlmann Jan,Shishatskiy Sergey,Wind Jan,Wolff Thorsten

《工程（英文）》 2017年第3卷第4期页码 485-493 doi: 10.1016/J.ENG.2017.04.004

摘要：

气体膜分离法是从气流中分离二氧化碳（CO2sub>）的最有前途的技术之一。例如，采用该技术对燃烧过程中的烟气进行处理，以达到CO2sub> 捕集和封存的目的。聚环氧乙烷嵌段共聚物能够很好地应用于膜分离技术，如Pebax® 或PolyActive™。本文采用PolyActive™ 作为复合薄膜的选择层。在环境温度下，当CO2sub>/N2sub> 选择性超过55 时，这种薄膜的CO2sub>渗透率高达4 m³(STP)·m⁻²·h⁻¹·bar⁻¹（注：1bar=10⁵ PaPolyActive™ 在检测中显示出了稳定的分离性能，表明PolyActive™ 非常适用于作为膜材料进行工业规模气体处理。

关键词：气体渗透薄膜复合膜 CO2sub>分离 CCS 沼气处理膜组件

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Rh2sub>O3sub>/hexagonal CePO4sub> nanocatalysts for N2sub>O decomposition

Huan Liu, Zhen Ma

《化学科学与工程前沿（英文）》 2017年第11卷第4期页码 586-593 doi: 10.1007/s11705-017-1659-6

摘要： Hexagonal CePO nanorods were prepared by a precipitation method and hexagonal CePO nanowires were prepared by hydrothermal synthesis at 150 °C. Rh(NO ) was then used as a precursor for the impregnation of Rh O onto these CePO materials. The Rh O supported on the CePO nanowires was much more active for the catalytic decomposition of N O than the Rh O supported on CePO nanorods. The stability of both catalysts as a function of time on stream was studied and the influence of the co-feed (CO , O , H O or O /H O) on the N O decomposition was also investigated. The samples were characterized by N adsorption-desorption, inductively coupled plasma optical emission spectroscopy, X-ray diffraction, transmission electron microscopy, X-ray photoelectron microscopy, hydrogen temperature-programmed reduction, oxygen temperature-programmed desorption, and CO temperature-programmed desorption in order to correlate the physicochemical and catalytic properties.

关键词： Rh₂O₃ CePO₄ N₂O decomposition

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CO2sub> methanation and co-methanation of CO and CO2sub> over Mn-promoted Ni/Al2sub>O3sub> catalysts

Kechao Zhao,Zhenhua Li,Li Bian

《化学科学与工程前沿（英文）》 2016年第10卷第2期页码 273-280 doi: 10.1007/s11705-016-1563-5

摘要： A series of Mn-promoted 15 wt-% Ni/Al O catalysts were prepared by an incipient wetness impregnation method. The effect of the Mn content on the activity of the Ni/Al O catalysts for CO methanation and the co-methanation of CO and CO in a fixed-bed reactor was investigated. The catalysts were characterized by N physisorption, hydrogen temperature-programmed reduction and desorption, carbon dioxide temperature-programmed desorption, X-ray diffraction and high-resolution transmission electron microscopy. The presence of Mn increased the number of CO adsorption sites and inhibited Ni particle agglomeration due to improved Ni dispersion and weakened interactions between the nickel species and the support. The Mn-promoted 15 wt-% Ni/Al O catalysts had improved CO methanation activity especially at low temperatures (250 to 400 °C). The Mn content was varied from 0.86% to 2.54% and the best CO conversion was achieved with the 1.71Mn-Ni/Al O catalyst. The co-methanation tests on the 1.71Mn-Ni/Al O catalyst indicated that adding Mn markedly enhanced the CO methanation activity especially at low temperatures but it had little influence on the CO methanation performance. CO methanation was more sensitive to the reaction temperature and the space velocity than the CO methanation in the co-methanation process.

关键词： Mn promotion nickel catalysts CO₂ methanation co-methanation of CO and CO₂

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以净零排放为目标的封存驱动型CO2sub>提高采收率方法 Article

刘月亮, 芮振华

《工程（英文）》 2022年第18卷第11期页码 79-87 doi: 10.1016/j.eng.2022.02.010

摘要：可通过驱油过程将CO2sub>封存在油藏地质体中，因此，CO2sub>驱油与封存被视为降低CO2sub>排放的重要手段之一。本研究提出了一种新型的CO2sub>提高采收率（EOR）方法，即封存驱动型CO2sub>提高采收率，其主要目标是通过在油藏中封存尽可能多的CO2sub>来实现CO结果表明，DME可提高CO2sub>在原油中的溶解度，有利于CO2sub>的溶解封存；可抑制因CO2sub>的抽提作用造成的原油轻质组分“逃逸&rdquo封存驱动型CO2sub> EOR方法在提高波及效率方面优于传统的CO2sub> EOR，尤其是在采油后期更为明显；同时，封存驱动型CO2sub> EOR比传统的此外，通过封存驱动型CO2sub> EOR封存的CO2sub>量远超采出原油燃烧产生的碳排放总量。

关键词： CO2sub> EOR CO2sub>净排放量二甲醚封存驱动型CO2sub> EOR CO2sub>封存

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天然气提质过程中可有效回收丙烷和乙烷的高工业应用潜力金属有机框架材料 Article

咸士凯, 彭俊杰, Haardik Pandey, Timo Thonhauser, 王浩, 李静

《工程（英文）》 2023年第23卷第4期页码 56-63 doi: 10.1016/j.eng.2022.07.017

摘要：

开发具有高吸收和选择性的高效吸附剂用于从天然气中分离和回收C2sub>H6sub>和C3sub>H8sub>是一项重要但具有挑战性的任务。此外，MOF-303 也显示出很高的C2H6吸收能力（在10 kPa 时）和C2sub>H6sub>/CH4 sub>(10:85, V/sub>3sub>H8sub>和C2sub>H6sub>的高负载能力和选择性。最后，通过三元突破性实验、再生试验和循环评价，证明了MOF-303 和MIL-160 作为先进的吸附剂在高效分离C3sub>H8sub>/C2sub>H<sub其优异的分离性能、高稳定性、低成本和良好的可扩展性，是天然气净化和回收C2sub>H6sub>和C3sub>H8sub>的理想吸附剂。

关键词：金属-有机框架，烃类吸附和分离，选择性，稳定性，放大合成

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Al2sub>O3sub> and CeO2sub>-promoted MgO sorbents for CO2sub> capture at moderate

Huimei Yu, Xiaoxing Wang, Zhu Shu, Mamoru Fujii, Chunshan Song

《化学科学与工程前沿（英文）》 2018年第12卷第1期页码 83-93 doi: 10.1007/s11705-017-1691-6

摘要： A series of Al O and CeO modified MgO sorbents was prepared and studied for CO sorption at moderate temperatures. The CO sorption capacity of MgO was enhanced with the addition of either Al O or CeO . Over Al O -MgO sorbents, the best capacity of 24.6 mg-CO /g-sorbent was attained at 100 °C, which was 61% higher than that of MgO (15.3 mg-CO /g-sorbent). The highest capacity of 35.3 mg-CO /g-sorbent was obtained over the CeO -MgO sorbents at the optimal temperature of 200 °C. Combining with the characterization results, we conclude that the promotion effect on CO sorption with the addition of Al O and CeO can be attributed to the increased surface area with reduced MgO crystallite size. Moreover, the addition of CeO increased the basicity of MgO phase, resulting in more increase in the CO capacity than Al O promoter. Both the Al O -MgO and CeO -MgO sorbents exhibited better cyclic stability than MgO over the course of fifteen CO sorption-desorption cycles. Compared to Al O , CeO is more effective for promoting the CO capacity of MgO. To enhance the CO capacity of MgO sorbent, increasing the basicity is more effective than the increase in the surface area.

关键词： CO₂ capture MgO sorbents Al₂O₃ CeO₂ flue gas

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The stabilization effect of Al2sub>O3sub> on unconventional Pb/SiO2sub> catalyst

《化学科学与工程前沿（英文）》 2023年第17卷第10期页码 1423-1429 doi: 10.1007/s11705-023-2315-y

摘要： Similar to Sn, Pb located at the same group (IVA) in the periodic table of elements, can also catalyze propane dehydrogenation to propene, while a fast deactivation can be observed. To enhance the stability, the traditional carrier Al₂O₃ with a small amount, was introduced into Pb/SiO₂ catalyst in this study. It has been proved that Al₂O₃ can inhibit the reduction of PbO, and weaken the agglomeration and loss of Pb species due to its enhanced interaction with Pb species. As a result, 3Al15Pb/SiO₂ catalyst exhibits a much higher stability up to more than 150 h. In addition, a simple schematic diagram of the change of surface species on the catalyst surface after Al₂O₃ addition was also proposed.

关键词： Pb/SiO₂ Al₂O₃ propane dehydrogenation propene stability

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Cu-doped Bi/Bi2sub>WO6sub> catalysts for efficient N2sub> fixation by photocatalysis

《化学科学与工程前沿（英文）》 2023年第17卷第10期页码 1412-1422 doi: 10.1007/s11705-023-2312-1

摘要： In this paper, Cu-doped Bi₂WO₆ was synthesized via a solvothermal method and applied it in photocatalytic N₂ immobilization. Characterization results showed the presence of a small amount of metallic Bi in the photocatalyst, indicating that the synthesized photocatalyst is actually Bi/Cu-Bi₂WO₆ composite. The doped Cu had a valence state of +2 and most likely substituted the position of Bi³⁺. The introduced Cu did not affect the metallic Bi content, but mainly influenced the energy band structure of Bi₂WO₆. The band gap was slightly narrowed, the conduction band was elevated, and the work function was reduced. The reduced work function improved the transfer and separation of charge carriers, which mainly caused the increased photoactivity. The optimized NH₃ generation rates of Bi/Cu-Bi₂WO₆ reached 624 and 243 μmol·L^–1·g^–1·h^–1 under simulated solar and visible light, and these values were approximately 2.8 and 5.9 times higher those of Bi/Bi₂WO₆, respectively. This research provides a method for improving the photocatalytic N₂ fixation and may provide more information on the design and preparation of heteroatom-doped semiconductor photocatalysts for N₂-to-NH₃ conversion.

关键词： Bi₂WO₆ Cu doping work function photocatalytic N₂ fixation charge separation

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ZnFe2sub>O4sub> deposited on BiOCl with exposed (001) and (010) facets for photocatalyticreduction of CO2sub> in cyclohexanol

Guixian Song, Xionggang Wu, Feng Xin, Xiaohong Yin

《化学科学与工程前沿（英文）》 2017年第11卷第2期页码 197-204 doi: 10.1007/s11705-016-1606-y

摘要： ZnFe O -BiOCl composites were prepared by both hydrothermal and direct precipitation processes and the structures and properties of the samples were characterized by various instrumental techniques. The samples were then used as catalysts for the photocatalytic reduction of CO in cyclohexanol under ultraviolet irradiation to give cyclohexanone (CH) and cyclohexyl formate (CF). The photocatalytic CO reduction activities over the hydrothermally prepared ZnFe O -BiOCl composites were higher than those over the directly-precipitated composites. This is because compared to the direct-precipitation sample, the ZnFe O nanoparticles in the hydrothermal sample were smaller and more uniformly distributed on the surface of BiOCl and so more heterojunctions were formed. Higher CF and CH yields were obtained for the pure BiOCl and BiOCl composite samples with more exposed (001) facets than for the samples with more exposed (010) facets. This is due to the higher density of oxygen atoms in the exposed (001) facets, which creates more oxygen vacancies, and thereby improves the separation efficiency of the electron-hole pairs. More importantly, irradiation of the (001) facets with ultraviolet light produces photo-generated electrons which is helpful for the reduction of CO to ·CO . The mechanism for the photocatalytic reduction of CO in cyclohexanol over ZnFe O -BiOCl composites with exposed (001) facets involves electron transfer and carbon radical formation.

关键词： reduction of CO₂ cyclohexanol ZnFe₂O₄ deposited BiOCl facet composite photocatalyst

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固体氧化物电解池共电解H2sub>O/CO2sub>研究进展

范慧,宋世栋,韩敏芳

《中国工程科学》 2013年第15卷第2期页码 107-112

摘要：本文介绍了固体氧化物电解池的结构特点及其用于H2O/CO2的共电解制备H2和CO的工作原理，综述了固体氧化物电解池的组成形式，以及单片电解池和电解池堆用于H2O/CO2共电解反应的国内外研究进展，并阐述了提高固体氧化物电解池共电解效率所亟需解决的问题

关键词：固体氧化物电解池 H2sub>O/CO2sub>共电解合成气电解效率水电解

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含稀释剂的Al-Cr2sub>O3sub>体系燃烧合成反应热力学分析与反应模型

张衍诚,潘冶,张传

《中国工程科学》 2004年第6卷第6期页码 63-67

摘要：

对含稀释剂Al203和Cr203的Al-Cr203体系燃烧合成反应进行了热力学计算与分析，讨论了起始反应温度T0、稀释剂Al2O3和Cr2O3的含量对绝热反应温度7^的影响，并得出T0与Tad在特定温度段上的近似线性关系以及该关系在指导材料成分设计上的应用；揭示了反应驱动力—&mdash

关键词：金属陶瓷燃烧合成 Al-Cr203体系热力学反应模型

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Nickel(II) ion-intercalated MXene membranes for enhanced H2sub>/CO2sub> separation

Yiyi Fan, Jinyong Li, Saidi Wang, Xiuxia Meng, Yun Jin, Naitao Yang, Bo Meng, Jiaquan Li, Shaomin Liu

《化学科学与工程前沿（英文）》 2021年第15卷第4期页码 882-891 doi: 10.1007/s11705-020-1990-1

摘要： Hydrogen fuel has been embraced as a potential long-term solution to the growing demand for clean energy. A membrane-assisted separation is promising in producing high-purity H . Molecular sieving membranes (MSMs) are endowed with high gas selectivity and permeability because their well-defined micropores can facilitate molecular exclusion, diffusion, and adsorption. In this work, MXene nanosheets intercalated with Ni were assembled to form an MSM supported on Al O hollow fiber via a vacuum-assisted filtration and drying process. The prepared membranes showed excellent H /CO mixture separation performance at room temperature. Separation factor reached 615 with a hydrogen permeance of 8.35 × 10 mol·m ·s ·Pa . Compared with the original Ti C T /Al O hollow fiber membranes, the permeation of hydrogen through the Ni -Ti C T /Al O membrane was considerably increased, stemming from the strong interaction between the negatively charged MXene nanosheets and Ni . The interlayer spacing of MSMs was tuned by Ni . During 200-hour testing, the resultant membrane maintained an excellent gas separation without any substantial performance decline. Our results indicate that the Ni tailored Ti C T /Al O hollow fiber membranes can inspire promising industrial applications.

关键词： MXene H₂/CO₂ separation nickel ions hollow fiber